<template>
    <div>
        <el-form ref="loginForm" :model="form" :rules="rules" label-width="80px" class="login-box">
            <h3 class="login-title">欢迎登录</h3>
            <el-form-item label="账号" prop="username">
                <el-input type="text" placeholder="请输入账号" v-model="form.username" />
            </el-form-item>
            <el-form-item label="密码" prop="password">
                <el-input type="password" placeholder="请输入密码" v-model="form.password" />
            </el-form-item>
            <el-form-item>
                <el-button type="primary" @click="onSubmit('loginForm')">登录</el-button>
            </el-form-item>
        </el-form>
        <el-dialog :visible.sync="dialogVisible" title="提示">
            <span>请输入账号和密码</span>
            <span slot="footer" class="dialog-footer">
                <el-button type="primary" @click="dialogVisible = false">确定</el-button>
            </span>
        </el-dialog>
    </div>
</template>

<!--这个是vue2 的选项式 API-->
<script>
export default {
    name: "Login",
    data() {
        return {
            form: {
                username: "",
                password: ""
            },
            rules: {
                username: [
                    { required: true, message: '账号不能为空', trigger: 'blur' }
                ],
                password: [
                    { required: true, message: '密码不能为空', trigger: 'blur' }
                ]
            },
            dialogVisible: false,
        };
    },
    methods: {
        onSubmit(formName) {
            this.$refs[formName].validate((valid) => {
                if (valid) {
                    this.$router.push('/main/' + this.form.username);
                } else {
                    this.dialogVisible = true;
                    return false;
                }
            });
        }
    }
};
</script>

<style scoped>
.login-box {
    border: 1px solid #DCDFE7;
    width: 350px;
    margin: 180px auto;
    padding: 35px 35px 15px 15px;
    border-radius: 5px;
    box-shadow: 0 0 25px #909399;
}

.login-title {
    text-align: center;
    margin: 0 auto 40px auto;
    color: #303133;
}
</style>